What is "choroid plexus"

Choroid \Cho"roid\, a. [gr. ?; ? chorion + e'i^dos form.] (Anat.) resembling the chorion; as, the choroid plexuses of the ventricles of the brain, and the choroid coat of the eyeball. -- n. The choroid coat of the eye. See Eye.

Choroid plexus (Anat.), one of the delicate fringelike processes, consisting almost entirely of blood vessels, which project into the ventricles of the brain.

n. a vascular plexus of the cerebral ventricles that regulate intraventricular pressure [syn: plexus choroideus]

The choroid plexus is a plexus of cells that produces the cerebrospinal fluid in the ventricles of the brain. The choroid plexus consists of modified ependymal cells.